| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a thermoplastic resin foam molding of the required rib strength having short side wall portions and long side wall portions provided on the periphery of a rectangular bottom portion at an obtuse angle with respect to the bottom portion, formed of less amount of raw materials or heat energy and having a more effective volume as a container. <P>SOLUTION: The thermoplastic foam molding (a container 5) has the thickness t2 of the long side wall portions larger than the thickness t1 of the short side wall portions. The angle θ1 formed between the bottom portion and the short side wall portions is smaller than the angle θ2 formed between the bottom portion and the long side wall portions. <P>COPYRIGHT: (C)2004,JPO |
